Most effective way to sterilize surfaces and gear?

Sanitation chemicals come from all different suppliers and
manufacturers. These chemicals are typically not usable on
instruments that will come in direct contact with the human skin,
because they are too much of an irritant. They are acceptable
to use on surfaces that are required to be kept sanitized. It is
important to always read the entire manufacturer’s warnings and
instructions it is also important not to deviate from these directions.
Usually these chemicals are not that expensive, and can come
in a powder formula that is then mixed in a ratio with water or
some other liquid. Do not deviate from the mixing directions, if
the mixture is not followed properly then the chemical will not be
effective.